<iframe src="https://www.youtube.com/embed/kfNx1PlrTvE" frameborder="0" width="558" height="314"></iframe> Don't piss off Britney, bitch. <a title="Britney Spears" href="http://www.live955.com/tag/britney-spears/"> </a>Britney Spears dropped the F-bomb on a rude fan at her show in Las Vegas last night after the concertgoer reportedly called her a “fat b**ch.”